Harbor Freight prices › Air Tools & Compressors › Air Compressor Accessories
MERLINitem 63578
1/4 in. Male Steel Industrial Coupler
Base price$3.99
Benton Harbor, MI shelf$3.99same shelf price as online 3 more stores
Mishawaka, IN shelf$3.99same shelf price as online 3 more stores
Niles, MI shelf$3.99same shelf price as online 3 more stores
Plymouth, IN shelf$3.99same shelf price as online 3 more stores
$3.99 is about its normal price.
Price alert
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The numbers
- Today
- $3.99
- Usual price
- $3.99
- 90-day low
- $3.39
- Lowest tracked
- $3.00
- Husky equivalent
- $4.98
Oct 5, 2024
Prices by store
Harbor Freight prices some items differently by store, and once you pick a store its site shows that store's shelf price. These come from contributors who share their store; the main price above is the base price, the one HF shows before you pick a store.
| Store | Today | Usually |
|---|---|---|
| Benton Harbor, MI store 583, checked Oct 23, 2026 | $3.99 | $3.99 |
| Mishawaka, IN store 113, checked Oct 17, 2026 | $3.99 | $3.99 |
| Niles, MI store 3516, checked Oct 17, 2026 | $3.99 | $3.99 |
| Plymouth, IN store 3625, checked Oct 17, 2026 | $3.99 | $3.99 |
Price history
Best price for anyoneInside Track Club priceRegular price
Every price change
| When | Price | Members | Why |
|---|---|---|---|
| Nov 2, 2026 to Nov 5, 20264 days, checked 0x | $3.99 | Regular price | |
| Oct 30, 2026 to Nov 1, 20263 days, checked 1x | $3.3915% off | 15% off any single item (one item a day) | |
| Oct 29, 20261 day, checked 0x | $3.99 | $3.39 | Regular price |
| May 9, 2025 to Oct 28, 2026538 days, checked 3x | $3.99 | Regular price | |
| Oct 6, 2024 to May 8, 2025215 days, checked 0x | $3.69 | Regular price | |
| Sep 22, 2024 to Oct 5, 202414 days, checked 0x | $3.0019% off | Coupon | |
| Jul 20, 2024 to Sep 21, 202464 days, checked 1x | $3.69 | Regular price | |
| Oct 28, 2022 to Jul 19, 2024631 days, checked 1x | $3.49 | Regular price | |
| Jun 5, 2022 to Oct 27, 2022145 days, checked 1x | $3.39 | Regular price |
Tracking since Oct 17, 2026. Last checked Nov 1, 2026.